Pennisetum alopecuroides (L.) Spreng.
[= Cenchrus compressus]

Idaho: Ada County: NE corner of Somerset Ridge development ca 2 air mi NNE of downtown Boise, dead end of E Ridgeline Drive (where excess landscape irrigation collects at head of eroding gulch) Elev. 934 m.
43.638° N, 116.1818° W
Marginally escaped from cultivation locally in well-watered sites, forming dense tufts, infl. purplish. (photographed)

Barbara Ertter 24478, Sep 12, 2021
ID, Accession: 193705, Barcode: ID199343